package com.lin.gulimall.product.service.impl;

import com.lin.gulimall.product.entity.AttrEntity;
import com.lin.gulimall.product.service.AttrService;
import com.lin.gulimall.product.vo.AttrGroupWithAttrsVo;
import com.lin.gulimall.product.vo.SpuItemAttrGroupVo;
import com.mysql.cj.util.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.lin.common.utils.PageUtils;
import com.lin.common.utils.Query;

import com.lin.gulimall.product.dao.AttrGroupDao;
import com.lin.gulimall.product.entity.AttrGroupEntity;
import com.lin.gulimall.product.service.AttrGroupService;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    AttrService attrService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catelogId) {
        //如果有key，就是检索条件
        String key = (String) params.get("key");
        // select * from `pms_attr_group` where catelog_id = ? and (attr_group_id=key or attr_group_name like %key%)
        //这里的泛型AttrGroupEntity，是看要查哪里的表
        QueryWrapper<AttrGroupEntity> wrapper=new QueryWrapper<AttrGroupEntity>();

        if (!StringUtils.isNullOrEmpty(key)){
            wrapper.and((obj)->{
                obj.eq("attr_group_id",key).or().like("attr_group_name",key);
            });
        if (catelogId==0){
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params),
                    wrapper);
            return new PageUtils(page);
        }else {
            wrapper.eq("catelog_id",catelogId);
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params),wrapper);
            return new PageUtils(page);
            }
        }
        return null;
    }

    //根据分类id查出所有的分组以及这些组里面的属性
    @Override
    public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCatelogId(Long catelogId) {
        //1、查询分组信息
        List<AttrGroupEntity> attrGroupEntities = this.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        //2、查询出所有的属性
        List<AttrGroupWithAttrsVo> collect = attrGroupEntities.stream().
                map(item ->{
                    AttrGroupWithAttrsVo attrsVo = new AttrGroupWithAttrsVo();
                    BeanUtils.copyProperties(item,attrsVo);
                    List<AttrEntity> attr = attrService.getRelationAttr(attrsVo.getAttrGroupId());
                    attrsVo.setAttrs(attr);
                    return attrsVo;
                }).collect(Collectors.toList());
        return collect;
    }

    @Override
    public List<SpuItemAttrGroupVo> getAttrGroupWithAttrsBySpuId(Long spuId, Long catalogId) {
        //1、查出当前spu对应的所有属性的分组信息以及当前分组下的所有属性对应的值
        AttrGroupDao baseMapper = this.baseMapper;
        List<SpuItemAttrGroupVo> vos = baseMapper.getAttrGroupWithAttrsBySpuId(spuId,catalogId);


        return vos;
    }

}